Shure KSM9 Wireless Transmitter  

Product #271030

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Item Note:

This product has been discontinued but may be available as a Open Box item.

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KSM9 microphones capture vocal subtlety with extraordinary detail to deliver clear articulation, functional flexibility and precise vocal reproduction for live performance. KSM9 microphones offer exceptional consistency across all frequencies, providing more gain before feedback, and minimizing proximity effect. With wired and wireless options and a choice of champagne and charcoal grey finishes, KSM9 offers the best combination for every performance. Shure UHF-R Wireless Systems feature KSM9 as the premier choice in handheld vocal microphones. KSM9 microphones are built to Shure's exacting endurance standards, renowned worldwide and proven night after night, center stage.

Consumer Alert:

Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCCs wireless microphone website at:

  • Dual gold layered, low-mass Mylar® diaphragm design
  • Switchable polar patterns (supercardioid and cardioid)
  • Advanced suspension shock mount
  • Premium electronic components including Class A transformerless preamplifier circuitry
  • Gold-plated internal and external connectors, including XLR Output Durable aluminum housing
  • Champagne or charcoal grey finish
  • Full-range frequency response (50Hz to 20kHz)

KSM9 Wireless Transmitter Specifications:

  • Cartridge Type
    Condenser (Electret Biased)
    Frequency Response
    50 to 20,000 Hz
    Output Impedance
    150 ohms (actual)
    Phantom Power
    48 Vdc +/- 4 Vdc (IEC-268-15/DIN 45 596), positive pins 2 and 3
    Current Drain
    5.2 mA typical at 48 Vdc
    Common Mode Rejection
    >60 dB, 50 Hz to 20 kHz
    Positive pressure on front diaphragm produces positive voltage on output pin 2 relative to pin 3
    Directional Polar Patterns
    Sensitivity (typical; at 1000 Hz; 1 Pa = 94 dB SPL)
    -51 dBV/Pa
    Self-noise (typical, equivalent SPL; A-weighted, IEC 651)
    22 dB
    Maximum SPL @ 1000 Hz
    2500 ohm load: 152 dB
    1000 ohm load: 152 dB
    Output Clipping Level*
    2500 ohm load: 6.7 dBV
    1000 ohm load: 6.0 dBV
    Dynamic Range
    2500 ohm load: 130 dB
    1000 ohm load: 130 dB
    Signal to Noise ratio**
    72 dB
    Dimensions and Weight
    49 mm (1 15/16 in.) maximum body diameter, 191 mm (7.5 in.) long; 300 grams (10.6 oz).

    *100 Hz to 20 kHz;THD < 1%.
    **S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted
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